If you wish to know why it is by means of water and not some other element that grace is given, you will find the reason in going through the Scriptures. Water is a wonderful thing–and the most beautiful of the four sensible elements of the cosmos. The sky is the dwelling of the angels, but the skies are made of water; earth is the home of men, but the earth has come out of the waters; and before the creation of visible things in six days, the Spirit of God hovered over the waters. The water is the principle of the Cosmos, and the Jordan of the Gospel.
~St. Cyril of Jerusalem